184 Metopella 



nearly as long as antenna 1, ultimate and penultimate joints of peduncle subequal, 

 flagellum longer than peduncle, 10- or 11-jointed. Maxilla 1, palp 2-jointed. 

 Maxillipeds, inner plates separate. Gnathopod 1 subchelate, 4*^ Joint produced 

 along the short cup-like 5*^, 6*^ much longer than 4*^ or 5*^, almost oblong, palm 

 convex, not very oblique, very miuutely pectiuate, defined by a denticle and 

 2 spines. Gnathopod 2 very similar to gnathopod 1, but larger, 6*^ Joint longer, a 

 little widened distally, palm smooth, convex, scarcely oblique. Peraeopods 1 — 5 

 (Fig. 48) slender, all joints linear, but 2*^ Joint in peraeopods 3 and 4 (not in 5) 

 a little wider above than below. üropod 3, peduncle scarcely longer than 

 1^* Joint of ramus, 2*^ of ramus rather shorter than 1=^*. Telson not twice 

 as long as broad, apex narrow. L. about 3 mm. 



Strait of Magellan (Cape Virgins). Depth 100 m. 



4. M. negleota (H. J. Hansen) 1876 Metopa longimana (part..), A. Boeck, 

 Skand. Arkt. Amphip., v.2 t. 17 f. 5 — 5n | 1887 M. neglecta, H. J. Hansen in: Vid. 

 Meddel., ser. 4 v.9 p. 96 t. 3 f. 9— 9b | 1893 M. n., A. Della Valle in: F. Fl. Neapel, 

 V. 20 p. 640 t. 59 f. 56 | 1892 M. n., Metopella (part.), O. O. Sars, Crust. Norway, v. 1 

 p. 274 t. 97 f. 2. 



Body rather compressed, integument thin. Head, lateral corners sub- 

 quadrate. Side-plate 4 larger than 2^ and 3^ combined. Pleon segment 3, postero- 

 lateral angies somewhat produced. Eyes sraall, round. Antenna 1, flagellum 

 scarcely as long as peduncle, about 8-jointed. Antenna 2 in Q subequal to 

 antenna 1, in ö rather longer, ultimate Joint of peduncle shorter than penultimate, 

 flagellum subequal to the latter. Maxilla 1, palp very long, 1-jointed (Boeck 

 perhaps overlooked the division into 2 joints). Maxillipeds, inner plates 

 separate (Boeck's figure). Gnathopod 1, 4*-^ Joint not much produced, 6*11 almost 

 linear, not much shorter than 5*''. Gnathopod 2, 5*^ Joint narrowly cup-like, 

 6*^ long and narrow, widening distally, palm rather oblique, curved, smooth, 

 defined by a denticle and 2 spines. Peraeopods 1 — 5 extremely slender, 

 only 2'^ Joint in last pair at all expanded, and that only in the upper part. 

 üropod 3, peduncle armed with 2 spinules, joints of ramus subequal. Telson 

 long and narrow, apex obtuse, 2 pairs of lateral spines. L. g 3 mm. 



Arctic Ocean, Xorth-Atlantic and Xorth-Sea (West-Xorway; (Ti-eenland. depth 

 19—113 m). 



5. M. carinata (H. J. Hansen) 1887 Metopa c, H. .1. Hansen in: Vid. Meddel., 

 ser. 4 v.9 p. 99 t. 4 f. 3— 3e | 1893 M. c, A. Della Valle in: F. Fl. Xeapel, u 20 p. 637 

 t. 59 f. 49. 



Body deep, little compressed in 9, more so in ö. Peraeon segment 4 

 much the largest, with rounded dorsal carina. more elevated in 9 than in ö. 

 Side-plate 2 with subacute apex, 4*^ much larger than 2*^ and 'S^ combined. Eyes 

 small, round. Antennae 1 and 2 subequal, very short and slender in 9 , thicker and 

 longer in ö. Antenna 2, ultimate and penultimate joints of peduncle subequal. 

 Gnathopod 1 feeble, 6*^^ Joint twice as long as ö^^, more slender, tapering. 

 Gnathopod 2, 6*^ Joint in 9 large, widening distally, palm curved, a little oblique, 

 defined by a long narrow projecting process; 6*^ Joint in ö longer and 

 narrower, not dilated, palm very oblique, defined by a minute tubercle. 

 Peraeopods 1 — 5, all joints slender, 2*^ in peraeopod 5 with slight linear 

 expansion. L. 9 3, d 2-1 mm. 



Arctic Ocean and Xorth-Atlantic (Greenland). Depth 4 — 94 10. 



